/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.confignode.persistence.partition.maintainer;

import org.apache.iotdb.common.rpc.thrift.TConsensusGroupId;
import org.apache.iotdb.common.rpc.thrift.TDataNodeLocation;
import org.apache.iotdb.commons.utils.ThriftCommonsSerDeUtils;
import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TProtocol;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.util.Objects;

public class RegionDeleteTask extends RegionMaintainTask {

    private TConsensusGroupId regionId;

    public RegionDeleteTask() {
        super(RegionMaintainType.DELETE);
    }

    public RegionDeleteTask(TDataNodeLocation targetDataNode, TConsensusGroupId regionId) {
        super(RegionMaintainType.DELETE);
        this.targetDataNode = targetDataNode;
        this.regionId = regionId;
    }

    public TConsensusGroupId getRegionId() {
        return regionId;
    }

    @Override
    public void serialize(DataOutputStream stream) throws IOException {
        stream.writeInt(RegionMaintainType.DELETE.ordinal());

        ThriftCommonsSerDeUtils.serializeTDataNodeLocation(targetDataNode, stream);
        ThriftCommonsSerDeUtils.serializeTConsensusGroupId(regionId, stream);
    }

    @Override
    protected void deserialize(ByteBuffer buffer) throws IOException {
        this.targetDataNode = ThriftCommonsSerDeUtils.deserializeTDataNodeLocation(buffer);
        this.regionId = ThriftCommonsSerDeUtils.deserializeTConsensusGroupId(buffer);
    }

    @Override
    public void serialize(OutputStream outputStream, TProtocol protocol)
            throws IOException, TException {
        ReadWriteIOUtils.write(RegionMaintainType.DELETE.ordinal(), outputStream);

        this.targetDataNode.write(protocol);
        this.regionId.write(protocol);
    }

    @Override
    protected void deserialize(InputStream inputStream, TProtocol protocol) throws TException {
        this.targetDataNode = new TDataNodeLocation();
        this.targetDataNode.read(protocol);
        this.regionId = new TConsensusGroupId();
        this.regionId.read(protocol);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof RegionDeleteTask)) return false;
        if (!super.equals(o)) return false;
        RegionDeleteTask that = (RegionDeleteTask) o;
        return regionId.equals(that.regionId);
    }

    @Override
    public int hashCode() {
        return Objects.hash(super.hashCode(), regionId);
    }
}
